Summer Equation: A Song of Youth

[Main Cast | The Peak of Youth]

**Main Couple 1: Top Student Council President × Star of the School Basketball Team**

Shen Yan (Top · Student Council President)

- 188 cm tall, gold-rimmed glasses, first place year after year. Beneath his buttoned-up shirt is a lean waist sculpted by swimming.

- Famous line: “The study room is under my control, and so are you...” The rhythm of his fingers tapping the desk is enough to make Zhou Yubai weak in the knees.

Zhou Yubai (Bottom · Basketball Team Captain)

- 182 cm tall, little tiger teeth and an ear cuff. After every basket, he blows Shen Yan a kiss, though Shen Yan always pretends not to notice.

- Until one day after practice, Shen Yan corners him in the equipment room. “Blowing kisses? Let me teach you what the real thing looks like.”

Main Couple 2: Arts Club President × Science Whiz

Lin Huai (Top · Literature Club President)

- 185 cm tall, charming eyes, sleeves rolled up to reveal a watch. His love letters are passed around the whole school, but he writes them for only one person.

- He corners Lu Xingye in the math department. “The definition of a ‘convergent function’... Want me to teach you through practical demonstration?”

Lu Xingye (Bottom · Competition Maniac)

- 178 cm tall, unruly hair and a cowlick, forever getting the answers to matters of the heart wrong, until Lin Huai snatches away his scratch paper. “I'm more useful than L'Hôpital's rule.”

- They spoil each other with direct, honest affection, going from mutual pining to a confession in no more than three chapters

- Every couple gets their own standout moments, in the study room, on the court, in the infirmary...

- Everyone plays matchmaker, with no villains, and forum posts sprinkled throughout for extra sweetness